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[36] Yan, H., Ding, S., Suel, T.,20xx. Inverted index pression and que。而且，通過家庭診斷服務提供的診斷幫助，他可以為不同的用戶組 提供基本預防知識，特別是老年人和慢性病患者。在 (Zhang et al., 20xxa, 20xxb)中，作者通過子樹方案解決了匿名的大規(guī)模數(shù)據集的可擴展性問題，以保護醫(yī)療數(shù)據在分享過程中的隱私。類似于在專家系統(tǒng)的這些工作，我們從大數(shù)據集中提取知識以幫助用戶做出正確的判斷。 (Expert system, 20xx) ES 背后的基本理念是把完成特定任務的知識從一個人轉移到一臺電腦。作者提到，大量的醫(yī)療保健任務可以由 PHISP平臺來支持，提供很多智能的個性化的服務。同樣，在 Cheng et al. (20xx)中，一組基于云架構的硬件、軟件和設計模式被采用以實現(xiàn)低成本進行快速、大規(guī)模的數(shù)據挖掘。如果李也有{胸部疼痛、高燒 }的癥狀 ,李可能是感染了急性膿胸。 形式概念計算 根據定義 7 和算法 4，在我們的例子中有 11 種概念包括在形式內容中，每種概念都被一個圈所表示，如圖 11。為了保護用戶的隱私，根據李的訪問權限，如姓名、地址這樣的隱私信息會被過濾。關于基本信息 ,李選擇“男性” ,“成年人”。同樣 ,當并發(fā)用戶查詢數(shù)量改變時 ,我們可以調整行數(shù) (即 M 值 )。為了改善延遲 ,我們可以在搜索節(jié)點集群中添加更多行。 （ 2）相對于 M 值的性能 表 6 性能關于 M 的測試數(shù)據 在這個測試中， N 為定值 3。為了解決這個問題 ,我們可以添加更多的搜索節(jié)點到節(jié)點搜索集群 ,以提高搜索性能。（相應地， N 為 1,